@font-face{font-family:CloudSerif;src:url('/fonts/display.ttf') format('truetype');font-weight:600;font-display:swap}
:root{color-scheme:light;--paper:#fff;--ink:#20282b;--muted:#5b6a6d;--accent:#285f69;--rule:#dce4e4;--soft:#f1f6f6;--display:CloudSerif,'Songti SC','STSong',Georgia,serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scrollbar-color:#9ab4b8 var(--paper)}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;-webkit-font-smoothing:antialiased}
::selection{background:#cfe4e7;color:#163d46}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:5px}a:hover{color:var(--accent)}a:focus-visible{outline:2px solid var(--accent);outline-offset:6px;border-radius:2px}
.skip{position:fixed;top:10px;left:10px;z-index:4;transform:translateY(-180%);background:var(--paper);padding:12px}.skip:focus{transform:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 42px}.masthead{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:32px;padding-bottom:28px;border-bottom:1px solid var(--rule)}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;font-size:19px;font-weight:600}.brand img{width:44px;height:44px;object-fit:contain}.masthead nav{font-size:14px;color:var(--muted)}.masthead nav a{text-decoration:none}
.intro{display:flex;align-items:flex-end;justify-content:space-between;gap:38px;padding:58px 0 46px}.intro h1{font-family:var(--display);font-size:clamp(36px,5vw,58px);line-height:1.3;font-weight:600;margin:0;letter-spacing:-.025em}.intro p{margin:0 0 3px;font-size:15px;line-height:1.9;color:var(--muted)}.intro p span{display:block}
.list-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:0 0 16px;border-bottom:1px solid var(--ink)}.list-heading h2{font-size:16px;font-weight:500;margin:0}.list-heading span{font-size:14px;color:var(--muted)}
.writing-list{list-style:none;margin:0;padding:0}.writing-row{border-bottom:1px solid var(--rule)}.writing-link{display:grid;grid-template-columns:108px minmax(0,1fr) 116px;gap:26px;align-items:center;padding:30px 0;text-decoration:none}.writing-link time{align-self:start;padding-top:7px;font-size:14px;font-variant-numeric:tabular-nums;color:var(--muted)}.writing-link h3{font-family:var(--display);font-size:24px;font-weight:600;line-height:1.55;letter-spacing:0;margin:0;overflow-wrap:anywhere}.writing-link p{font-size:14px;line-height:1.8;color:var(--muted);margin:9px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.writing-link img{width:116px;height:88px;object-fit:cover;border-radius:2px}.writing-link.no-image{grid-template-columns:108px minmax(0,1fr);padding-right:142px}.writing-link:hover h3{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:6px}
.site-footer{display:flex;justify-content:space-between;gap:20px;margin-top:56px;padding:22px 0 32px;border-top:1px solid var(--rule);font-size:14px;color:var(--muted);line-height:1.8}.site-footer a{text-decoration:none}
.author-contact{display:flex;flex-wrap:wrap;gap:0 10px;margin:4px 0 0}.author-contact a{color:var(--accent)}.author-contact a:hover{text-decoration:underline}
.article-shell{max-width:806px;margin:0 auto;padding:0 42px}.article-header{padding:56px 0 28px;border-bottom:1px solid var(--rule);margin-bottom:34px}.article-header h1{font-family:var(--display);font-size:clamp(29px,4.6vw,42px);font-weight:600;line-height:1.5;margin:0 0 22px;overflow-wrap:anywhere;text-wrap:balance}.byline{display:flex;flex-wrap:wrap;gap:10px 20px;color:var(--muted);font-size:14px;line-height:1.8}.byline time{font-variant-numeric:tabular-nums}
.article-body{font-size:17px;line-height:1.95;overflow-wrap:anywhere}.article-body p{margin:0 0 1.25em}.article-body img{display:block;max-width:100%;height:auto;margin:28px auto}.article-body img.emoji{display:inline;width:1.15em;height:1.15em;margin:0 .08em;vertical-align:-.2em}.article-body strong{font-weight:650}.article-body a{color:var(--accent)}.article-body h2,.article-body h3{font-family:var(--display);line-height:1.6;margin:2em 0 1em}.article-body blockquote{margin:28px 0;padding:0 20px;border-left:1px solid #8caeb4;color:#46595d}.article-body ul,.article-body ol{padding-left:1.5em}.article-body table{display:block;overflow-x:auto;border-collapse:collapse;max-width:100%;font-size:15px}.article-body td,.article-body th{border:1px solid var(--rule);padding:8px}.article-body pre{overflow-x:auto;white-space:pre-wrap}
.embedded-note{margin:30px 0;padding:22px 24px;background:var(--soft);font-size:15px;line-height:1.85}.embedded-note h2{font:600 16px/1.5 inherit;margin:0 0 10px}.embedded-note p{margin:6px 0}.embedded-note ul{margin:10px 0 0;padding-left:1.4em}.source{margin:36px 0;font-size:14px;color:var(--muted)}
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:36px;border-top:1px solid var(--rule);padding-top:24px;margin-top:44px}.article-nav a{text-decoration:none;line-height:1.7;font-size:16px;overflow-wrap:anywhere}.article-nav span{display:block;font-size:14px;color:var(--muted);margin-bottom:8px}.article-nav a:last-child{text-align:right}.article-nav a:hover{text-decoration:underline}
.not-found{min-height:55vh;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:14px}.not-found h1{font:600 40px/1.5 var(--display);margin:0}.not-found p{font-size:17px;line-height:1.8}
@media(max-width:720px){.wrap{padding:0 24px}.masthead{padding-top:20px;padding-bottom:20px}.brand{font-size:17px}.brand img{width:36px;height:36px}.intro{display:block;padding:38px 0 34px}.intro p{margin-top:20px}.writing-link{grid-template-columns:minmax(0,1fr) 86px;gap:10px 20px;padding:24px 0}.writing-link time{grid-column:1;padding:0}.writing-link .writing-copy{grid-column:1;grid-row:2}.writing-link img{grid-column:2;grid-row:1/3;width:86px;height:86px}.writing-link h3{font-size:21px;line-height:1.6}.writing-link p{font-size:14px}.writing-link.no-image{grid-template-columns:1fr;padding-right:0}.writing-link.no-image time,.writing-link.no-image .writing-copy{grid-column:1}.article-shell{padding:0 24px}.article-header{padding:38px 0 24px;margin-bottom:28px}.article-body{font-size:17px;line-height:1.95}.article-nav{gap:22px}.site-footer{margin-top:42px;flex-wrap:wrap}}
@media(max-width:400px){.wrap,.article-shell{padding-left:20px;padding-right:20px}.masthead nav{font-size:14px}.brand{gap:7px}.brand img{width:32px;height:32px}.writing-link{grid-template-columns:minmax(0,1fr) 68px;gap:10px 15px}.writing-link img{width:68px;height:76px}.writing-link h3{font-size:20px}.article-nav{grid-template-columns:1fr}.article-nav a:last-child{text-align:left}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.masthead,.article-nav,.site-footer,.source{display:none}.article-shell{max-width:none;padding:0}.article-header{padding-top:0}.article-body img{break-inside:avoid}}